mandoline. If you don't have a special slicer, you can still cut them with a sharp knife; they just won't look quite as pretty.
2-3 sweet potatoes, peeled if desired
2 Tbs. extra virgin olive oil
1/2 tsp. sea salt
Preheat the oven to 400 degrees. Slice the sweet potatoes to a thickness of 1/8 inch. Place them in a mixing bowl and toss them with the olive oil, salt, and juice from the lime. Spread them out on a cookie sheet covered with parchment paper (to make clean-up easier). Bake them for 10 minutes on each side or until the edges start curling.